Brothers Karamazov parallel

I'd like to talk of a parallel between this movie and a subplot of Dostoyevsky's novel.

There is a scene in BROTHERS KARAMOZOV where the villain, Smerdyakov, talks to Ivan Karamozov, who hates his father. Talking indirectly, Smerdy hints that the father might meet an unpleasant fate soon, and it would be prudent for Ivan to go away somewhere to have an alibi. Ivan is supposedly shocked, but he does go off without telling anybody about Smerdy, and Smerdy thinks that he has a go-ahead to murder Papa Karamozov, and does.

Note that parallels: the shifty schemer, the "innocent" who supposedly disapproves but doesn't make it clear, the "I thought we had a deal" angle, and even the hate-the-father theme. Dostoyevsky makes it clear that Ivan felt guilty afterwards, realizing that he subconsciously desired the murder and acted in a way to bring it about. The movie is much more vague about Guy's responsibility.

And given Hitchcock's fondness for sinister stories, I'm pretty sure he would read Dostoyevsky.